1222356790 has 16 divisors (see below), whose sum is σ = 2259708912. Its totient is φ = 475727904.

The previous prime is 1222356787. The next prime is 1222356799. The reversal of 1222356790 is 976532221.

It is a super-2 number, since 2×1222356790² = 2988312244118208200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222356799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1651464 + ... + 1652203.

It is an arithmetic number, because the mean of its divisors is an integer number (141231807).

Almost surely, 2^1222356790 is an apocalyptic number.

1222356790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222356790 is a deficient number, since it is larger than the sum of its proper divisors (1037352122).

1222356790 is a wasteful number, since it uses less digits than its factorization.

1222356790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3303711.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 1222356790 is about 34962.2194661609. The cubic root of 1222356790 is about 1069.2173477192.

The spelling of 1222356790 in words is "one billion, two hundred twenty-two million, three hundred fifty-six thousand, seven hundred ninety".